<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/sun.jpg" alt />
      </div>
      <!-- 登录表单区域 -->
      <el-form ref="loginFormRef" class="login_form" :model="loginForm" :rules="loginRules">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!-- 密码框 -->
        <el-form-item prop="password">
          <el-input
            type="password"
            v-model="loginForm.password"
            prefix-icon="iconfont icon-3702mima"
          ></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="reset">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 这是登录表单的数据绑定对象
      loginForm: {
        username: "admin",
        password: "123456",
      },
      // 这是表单的验证规则对象
      loginRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "长度在 3 到 10 个字符",
            trigger: "blur",
          },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "长度在 6 到 15 个字符",
            trigger: "blur",
          },
        ],
      },
    };
  },
  methods: {
    // 点击重置按钮.重置登录表单
    reset() {
      // console.log(this);
      // resetFields()重置表单内容并移除校验规则
      this.$refs.loginFormRef.resetFields();
    },
    login() {
      // 发送请求之前先对表单进行预校验
      this.$refs.loginFormRef.validate(async (valid) => {
        // console.log(valid);
        // valid 是一个布尔值true表示表单预校验通过,可以发送请求,false表示没有通过表单验证,不允许发送请求
        if (!valid) return;
        const { data: res } = await this.$http.post("login", this.loginForm);
        // console.log(res);
        if (res.meta.status !== 200) return this.$message.error("登录失败");
        this.$message.success("登录成功");

        console.log(res.data.token);
        // 在登录成功之后将返回的token令牌保存在本地
        sessionStorage.setItem("token", res.data.token);
        // 跳转到home页面 编程式导航
        this.$router.push("/home");
      });
    },
  },
};
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 8px;

  .avatar_box {
    position: absolute;
    left: 50%;
    margin-left: -75px;
    margin-top: -75px;
    width: 130px;
    height: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    background-color: #fff;

    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
.btns {
  //   display: flex;
  //   justify-content: flex-end;
  float: right;
}
</style>